Prefab Gym & Zoo
This samplem is built around the concept presented in this video:
These concepts allow you to view all of your prefabs in one place as well as use them in your game.
Prefab Zoo
The prefab zoo presents any 3D assets you assign in the inspector by folder. It will present the name of the asset, and spread the assets out in a grid by their folder.

Prefab Zoo Inspector
The inspector for the prefab zoo allows you to select which folders you want to view. You can specify the spacing between the generated items. A Sprite is used as the grid floor. 
Prefab Gym
The gym allows you to place your character within the scene to test out game mechanics in a controlled environment. This benefit is that you can test out your game mechanics without having to worry about interferring with levels being actively developed.
- You are able to leverage in world notes to provide context to the game mechanics.
- You can specify rules or restrictions on the game mechanics.
- This allows you to confirm that mechanics are working as expected.

